检索结果-南通市图书馆

High-lattice-adapted surface modifying Na_(4)MnV(PO_(4))_(3) for better sodium storage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第4期17卷 2728-2735页

作者： Chongran Song Shiyu Li ying bai International Joint Research Laboratory of New Energy Materials and Devices of Henan Province School of Physics and ElectronicsAcademy for Advanced Interdisciplinary StudiesHenan UniversityKaifeng 475004China

Sodium-ion batteries(SIBs)are required to possess long cycle life when used for large-scale energy *** polyanionic Na_(4)MnV(PO_(4))_(3)(NMVP)reveals good cyclic stability due to its unique three-dimensional(3D)frame structure,but it still faces the challenge of interfacial degradation in practical *** this work,NASICON-type Na_(1.3)Al_(0.7)Ti_(1.3)(PO_(4))_(3)(NATP)was deposited on the surface of NMVP to promote interface stability by surface modification and gradient *** a result,the optimized NMVP@2%NATP released a capacity retention of 44.8%after 1000 cycles at 5 C,much higher than that of the initial NMVP(28.9%).The enhanced electrochemical performance was mainly attributed to NATP coating acting as a fast ion transport carrier and physical barrier,significantly facilitating the Na^(+)diffusion and isolating side reaction at the electrode/electrolyte *** the other hand,Ti_(4)^(+)and Al^(3+)cations from the NATP were partially doped inside the NMVP surface to boost the transport of Na^(+),and the perfect lattice matching of NVMP and NATP improved the interface and structural stability accompanying long *** work demonstrated the effectiveness of surface modification with high lattice match material and provided new perspectives for high energy density solid-state SIBs.

关键词： high-lattice-adapted cathode surface modification sodium-ion batteries

Extensions of n-Hom Lie algebras

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Mathematics in China 2015年第3期10卷 511-522页

作者： Ruipu bai ying LI College of Mathematics and Computer Science Hebei University Baoding 071002 China

n-Hom Lie algebras are twisted by n-Lie algebras by means of twisting maps. n-Horn Lie algebras have close relationships with statistical mechanics and mathematical physics. The paper main concerns structures and representations of n-Horn Lie algebras. The concept of nρ-cocycle for an n-Hom Lie algebra （G, [,...,], α） related to a G-module （V, ρ,β） is proposed, and a sufficient condition for the existence of the dual representation of an n-Hom Lie algebra is provided. From a G-module （V, ρ,β） and an nρ-cocycle θ, an n-Horn Lie algebra （Tθ（V）, [,..., ]θ, γ） is constructed on the vector space Tθ（V） = G＋V, which is called the Tθ-extension of an n-Horn Lie algebra （G, [,..., ], α） by the G-module （V, ρ,β）.

关键词： n-Horn Lie algebra representation extension np-cocycle

A Converse Theorem for Split SO_(2l) over Finite Fields

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第3期40卷 731-771页

作者： Alexander HAZELTINE bai ying LIU Department of Mathematics Purdue University150 N.University St.West LafayetteIN 47907USA E-mail:ahazelti@purdue.edu liu2053@purdue.edu

We prove a converse theorem for split even special orthogonal groups over finite *** is the only case left on converse theorems of classical groups and the difficulty is the existence of the outer automorphism. In thi... 详细信息

关键词： Converse theorems generic cuspidal representations even special orthogonal groups

Multi-electron reaction and fast Al ion diffusion of δ-MnO_(2) cathode materials in rechargeable aluminum batteries via first-principle calculations

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第4期35卷 248-254页

作者： Lumin Zheng ying bai Chuan Wu School of Materials Science&Engineering Beijing Institute of TechnologyBeijing 100081China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019China

Rechargeable aluminum batteries with multi-electron reaction have a high theoretical capacity for next generation of energy storage devices. However, the diffusion mechanism and intrinsic property of Al insertion into MnO_(2) are not clear. Hence, based on the first-principles calculations, key influencing factors of slow Al-ions diffusion are narrow pathways, unstable Al-O bonds and Mn^(3+) type polaron have been identified by investigating four types of δ-MnO_(2)(O3, O'3, P2 and T1). Although Al insert into δ-MnO_(2) leads to a decrease in the spacing of the Mn-Mn layer, P2 type MnO_(2) keeps the long(spacious pathways)and stable(2.007–2.030 A) Al-O bonds resulting in the lower energy barrier of Al diffusion of 0.56 e V. By eliminated the influence of Mn^(3+)(low concentration of Al insertion), the energy barrier of Al migration achieves 0.19 e V in P2 type, confirming the obviously effect of Mn^(3+) polaron. On the contrary, although the T1 type MnO_(2) has the sluggish of Al-ions diffusion, the larger interlayer spacing of Mn-Mn layer,causing by H_(2)O could assist Al-ions diffusion. Furthermore, it is worth to notice that the multilayer δ-MnO_(2) achieves multi-electron reaction of 3|e|. Considering the requirement of high energy density, the average voltage of P2(1.76 V) is not an obstacle for application as cathode in RABs. These discover suggest that layered MnO_(2) should keep more P2-type structure in the synthesis of materials and increase the interlayer spacing of Mn-Mn layer for providing technical support of RABs in large-scale energy storage.

关键词： Rechargeable aluminum batteries δ-MnO_(2) First-principles calculations Multi-electron reaction Diffusion mechanism

Toward better electrode/electrolyte interfaces in the ionic-liquid-based rechargeable aluminum batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2020年第6期29卷 98-102,I0004页

作者： Haoyi Yang Feng Wu ying bai Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering and School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China

The past decade has witnessed the germination of rechargeable aluminum batteries(RABs)with the colossal potential to enact as a device for the large scale energy storage and *** Majority of investigations are dedicated to the exploration of suitable cathode materials,while less is known about the electrode/electrolyte interfaces that determine the electrochemistry of *** this perspective,we will highlight the significance of electrode/electrolyte interface for RABs,in overall kinetics and capacity *** will be laid on the complicated yet basic understandings of the phenomena at the interfaces,including the dendrite growth,surface Al2O3 and solid–electrolyte-interphase(SEI).And we will summarize the reported practice in effort to build better electrode/electrolyte interfaces in *** the end,outlook regarding to the challenges,opportunities and directions is presented.

关键词： Electrochemistry Interface Rechargeable aluminum battery

Charactering and optimizing cathode electrolytes interface for advanced rechargeable batteries:Promises and challenges

在线全文

学校读者我要写书评

暂无评论

Green Energy & Environment 2022年第4期7卷 606-635页

作者： Zhongyang Zhang Xinran Wang ying bai Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science&EngineeringBeijing Institute of TechnologyBeijingChina Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing314019China

With the advancement of secondary batteries,interfacial properties of electrode materials have been recognized as essential factors to their electrochemical ***,the majority of investigations are devoted into advanced electrode materials synthesis,while there is insufficient attention paid to regulate their *** this regard,the solid electrolyte interphase(SEI)at anode part has been studied for 40 years,already achieving remarkable outcomes on improving the stability of anode ***,the study on the cathode electrolyte interfaces(CEI)remains in infancy,which constitutes a potential restriction to the capacity contribution,stability and safety of *** fact,the native CEI generally possesses unfavorable characteristics against structural and compositional stability that requires demanding optimization ***,an in-depth understanding of the CEI is of great significance to guide the optimization principles in terms of composition,structure,growth mechanism,and electrochemical *** this literature,recent progress and advances of the CEI characterization methods and optimization protocols are summarized,and meanwhile the mutually-reinforced mechanisms between detection and modification are *** criteria and the potential development of the CEI characterization are proposed with insights of novel optimization directions.

关键词： Cathode electrolyte interface Secondary battery Characterization methods In situ/operando Synchrotron radiation

Circular RNAs:Diagnostic and Therapeutic Perspectives in CNS Diseases

在线全文

学校读者我要写书评

暂无评论

Current Medical Science 2023年第5期43卷 879-889页

作者： ying bai Hong-hong YAO Jiangsu Provincial Key Laboratory of Critical Care Medicine Department of PharmacologySchool of MedicineSoutheast UniversityNanjing 210009China Co-innovation Center of Neuroregeneration Nantong UniversityNantong 226001China Institute of Life Sciences Key Laboratory of Developmental Genes and Human DiseaseSoutheast UniversityNanjing 210009China

Circular RNAs(circRNAs)are a class of regulatory non-coding RNAs characterized by the presence of covalently closed ends.A growing body of evidence suggests that circRNAs play important roles in physiology and *** particular,accumulating data on circRNA functions in various central nervous system(CNS)diseases and their correlations indicate that circRNAs are critical contributors to the onset and development of brain *** this review,we focus on the regulatory and functional roles of circRNAs in CNS diseases,highlighting their diagnostic and therapeutic potential,with the aim of providing new insights into CNS diseases.

关键词： circular RNAs brain central nervous system disease diagnosis therapy

Design of new format for mass data compression

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Journal of China Universities of Posts and Telecommunications 2011年第1期18卷 121-128页

作者： QIN Jian-cheng bai Zhong-ying School of Computer Science Beijing University of Posts and Telecommunications Beijing 100876 China

In the field of lossless compression, most kinds of traditional software have some shortages when they face the mass data. Their compressing abilities are limited by the data window size and the compressing format design. This paper presents a new design of compressing format named ＇CZ format＇ which supports the data window size up to 4 GB and has some advantages in the mass data compression. Using this format, a compressing shareware named ＇ComZip＇ is designed. The experiment results support that ComZip has better compression ratio than WinZip, Bzip2 and are compressed. And ComZip has the potential to beat 7-zip in WinRAR in most cases, especially when GBs or TBs of mass data future as the data window size exceeds 128 MB.

关键词： mass data coding tossless compression LZ77/LZSS algorithm arithmetic coding

Sulfone-based high-voltage electrolytes for high energy density rechargeable lithium batteries:Progress and perspective

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2021年第4期32卷 1309-1315页

作者： Wenya Wu ying bai Xinran Wang Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China

Further enhancement in the energy density of rechargeable lithium batteries calls for high-voltage cathode materials and stable anodes,as well as matched high-voltage electrolytes without compromising the overall property of ***-based electrolytes have aroused great interest in recent years owing to their wide electrochemical window and high ***,significant challenges such as the complexity of synthesis,high melting point(typically above room temperature),high viscosity,and their poor compatibility with graphite-based anodes have drastically impeded their practical *** this review,recent progress of sulfone solvents in high energy density rechargeable lithium batteries is summarized theoretically and *** importantly,general improvement methods of sulfone-based electrolytes,such as adding additives and cosolvents,structural modifications of sulfo ne,superconcentrated salt strategy are briefly *** expect that this review provides inspiration for the future developments of sulfone-based high-voltage electrolytes(SHVEs)and their widespread applications in high specific energy lithium batteries.

关键词： Lithium batteries High voltage High energy density Sulfone-based electrolytes Optimizations